Today I have one of the first dresses I've ever made for you guys. If you know how to sew, this is actually a really easy design. I didn't use a pattern either, never liked making someone else's design. You just make a ruffled skirt, and for the upper part, you cut 2 pieces of fabric.
So this is for the upper part, and for the skirt, you cut a piece of fabric that is 1,5 times your perimeter. Than you ruffle it and attach it to the upper part. Use a zipper on the back.